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The 325 returned to testing on 4 May 1990 and exceeded the 5 December record on its first run of the day. The 500 km/h (311 mph) mark was unofficially broken on 9 May 1990, with runs at 506.5 km/h (315 mph) and 510.6 km/h (317.3 mph). The switches in the Vendôme station were passed at 502 km/h (312 mph). Instability of the contact dynamics ...
SI, and hence the use of "km/h" (or "km h −1 " or "km·h −1 ") has now been adopted around the world in many areas related to health and safety [36] and in metrology [37] in addition to the SI unit metres per second ("m/s", "m s −1 " or "m·s −1 "). SI is also the preferred system of measure in academia and in education.
Uncrewed torpedo speed claims range from 60 knots (110 km/h; 69 mph) for the British Spearfish torpedo [64] to 200 knots (370 km/h; 230 mph) for the Russian VA-111 Shkval. [ 65 ] ^ a b Ground effect vehicles (a.k.a. "Wing-In-Ground effect vehicles") are classified as maritime vessels, rather than aircraft, by the International Maritime ...
9.9 s at 223.7 km/h (139 mph) [12] 10.28 s at 217.32 km/h (135.04 mph) [94] [95] — Bugatti Veyron [vii] 2005 ICE 10.1 s at 228.5 km/h (142 mph) [96] — [xiv] 420 Porsche 911 GT2 RS (991) 2018 ICE 10.1 s at 221.9 km/h (137.9 mph) [97] [xv] — McLaren Senna: 2019 ICE 10.1 s at 237.3 km/h (147.5 mph) [80] — [xiv] 500 Ferrari 488 Pista: 2019 ICE
The knot (/ nɒt /) is a unit of speed equal to one nautical mile per hour, exactly 1.852 km/h (approximately 1.151 mph or 0.514 m/s). [1][2] The ISO standard symbol for the knot is kn. [3] The same symbol is preferred by the Institute of Electrical and Electronics Engineers (IEEE), while kt is also common, especially in aviation, where it is ...
In 2017, most of all IRTAD countries have a default speed limit in urban roads of 50 km/h, with various lower speeds, for instance, in the Netherlands, 70% of the urban roads are limited to 30 km/h. [ 3 ] Some countries, for instance the US, India or China, do not have a specific urban road maximum speed.
Miles per hour (mph, m.p.h., MPH, or mi/h) is a British imperial and United States customary unit of speed expressing the number of miles travelled in one hour. It is used in the United Kingdom , the United States , and a number of smaller countries, most of which are UK or US territories, or have close historical ties with the UK or US.
The first to surpass 200 km/h was the Frenchman Jose Meiffret in 1962, when he reached 204 km/h (127 mph) behind a Mercedes-Benz 300SL car on a German motorway. [ 30 ] Allan Abbott, a cycling enthusiast and motorcycle racer, elevated the motor-paced bicycle speed record at the Bonneville Salt Flats , reaching 223 km/h (139 mph) in 1973.